As Donald Trump holds off endorsing House Speaker Paul D. Ryan in Wisconsin's Republican primary, his running mate enthusiastically endorsed Ryan on Wednesday, calling him a “longtime friend” and “strong conservative leader.” “I strongly support Paul Ryan, strongly endorse his reelection,” Indiana Gov. Mike Pence said during an interview on Fox News on Wednesday afternoon. “I believe we need Paul Ryan in leadership in the Congress of the United States to rebuild our military, to strengthen our economy and to ensure that we have the kind of leadership in this country that will make America great again.” Trump has angered...